Once the environment is setup, clone the git repo, and make the project. This will create the
Python virtual environment under StackStorm, download and install required dependencies, and run
tests:

git clone https://github.com/StackStorm/st2.git
cd st2
# Note: Some of the tests rely on the submodules so you need to check them# out to make sure all the tests will pass locally
git submodule update --init --recursive
make requirements